LG Electronics is recruiting an army of social media users to test and talk up the company's new G4 smartphone ahead of its official launch on April 28. By offering 4,000 people a G4 for 30 days, the company hopes to create some buzz around its new device as flagship devices from its rivals Samsung Electronics and HTC go on sale. The Consumer Experience Campaign kicks off in South Korea on Wednesday, and will then expand to Turkey, Indonesia, Singapore, U.S., China, India, Brazil, Canada, U.K., France, Germany, Mexico, Japan and Hong Kong, LG said.